Valved ventilator inlet



Nov. 8, 1927. 1,648,322

J. B. OLSON ET AL VALVED VENTILATOR INLET Filed June 28, 1926 Patented Nov. 15227a rnsriay oLsoN AND Jenn e. snornoiunr rron-r aririiison, wisconsinnssienons To JAMES Menureefrunine coureur. er roar .erirrnsom wrscoivsnu .vienvnnvnnrrna'roia inner( v v Yapps@aufmrue' amie ze, 192e.' serial-no. 119,173.

This invention relates to'valved ventilatorVl C are used in barns7V stables, poultryoops, etc.

The primary object of this invention is to provide simple, inexpensive and practi-v calv means for controlling the admission'ot' air toA a building through a specially designed passage, thewalls otv which arev de.

signed to ,conform tothe standardr spacingl and dimensions otfioorfjoists,the coi'itrol-jy ling devices being adjustable in accordance with weather'conditions, and adapted to preV vent reversalsA in thev direction of the air current such as occur under abnormal condi# tions of weatheriand wind; 1

Inthe drawings: 1 Figure 1 is a rear elevation. ofthe improved inlet structure, showing the/same inf positionbetween the'fioor joists of ing;

a builddinal section taken on linev 27-2 of Figure 1. Figure 8 is a ydetail view of one oi the in-A termediate'bracket bearings, showing traglnents of the supporting cross rods and the.

intake'valve. Y

' Like parts are identified by the same ret- -erence rcharacters throughout the several views. l j

An open endedfrectangularcasing 10 is adapted to iitbet'ween two V4door joists .A

1 and A', which are spaced in accordance with.- the" standard practice of spacing' such joists.l

on 16 inch centers. The casing is supported in substantial contact with the floor B by suitable cleats 11 nailed to the joists near their lower margins after the casing has been adjusted in position. j

Within the casing a sheet `metal damper valve 12 has its lower portion pivotally mounted to swingjabout the axis of a supporting cross rod 13, the ends of whichare near tothe side wall VVoi-the casing, rihe lower margin of the valve is provided with a weight 14 whereby the-valve is'substantially balanced upon the pivot rod 13. The portionA of the valve 12 above the pivot rod 13 is adapted to seat in closed position against a heat insulating lining having side portions 15 provided with obliquely disposed inner margins 16. Its top portion 17 has a bevelled margin at 18 which is inclined in correspondence with the oblique margins 16 of the side portions.

Figure 2 is aview of the same inV longitiuV 'The Sheet man f the van@ i2 .is 'Steed at intervals along the line of the rod 13,

Aandthe material between the slits is pressedv Thesheet metal wall 2O extends upwardly and rearwardly and has .its upper :margin downwardly and rearwardly :inclined in the torni of a flange vwhich re-enforces .and stitfenslthis wall. Brackets 25 having` re versely-bent end portions 26 and` 27 secured.

to the wall 20 near there-enforcing flange 23. Each bracket ar`m26 projects through a slot -in the wall 2O and is apertured to ref.

',oeive and support the rod 13).` Theother a-rin` 27 oteach bracket is `similarly aper turedgand these arms receive and support a rod 28 from'which an adjustable stop wing 29 is supported.` A spring 3()v coiled about* the rod 28, has one `end bearing againstthe oblique wall 2O and the other end 31 bears against-the stop wing 29 and urges it in the direction of the upper portion ofthe valve or damper -.12. A chain or other flexible connection 32 is securedto the upper margins of the stop 'wingA 29 and extends downwardly through an .aperture in the bottom of the casing` 10. myThe lower end of the chain isvprovidedwith a hook 33 adapted to be en# gaged with Vany one of the seriesot downturned hook shaped projections 34E carried by a wall plate 35 mounted on any suitable support below kthe ventilator'casing. By pulling down on the chain 32 and engaging vthe hook 33 with a ydesired plate hook 347 the stop wing 29 may be held at the kdesired inclinationtov limit the openingimovementoi: the valve or damper 12; Thedampen' 5,topwing, and

Ytheir pivot rods are all supported from the pair oi? brackets'25 andA in assembling the intake structure, they may be attached to the wall portion 20 either before or aftery bending` said wall portion upwardlyV from the bottom wall of the casing.` and the side and top walls of the casing'may then be assembled and secured to the side margins of the bottom wall.

ends, whereby the entire air current will be directed toward the lower portion of the space enclosed by the casing. Y

` When the stop wing is in the position in f which it is illustrated by full lines in Figure 2, theV valve or damper 12 will be held in the closed position, but by pulling downwardly on the chain 32 which passes through an opening in `thev floor of the casing, the

` stop wing may be swung toward or beyond its'dotted line position as indicated in Figure: 2, whereupon the major portion of the valve or damper l2 will swing inwardly under 'extremely slight excess pressure on its outer surface and will close the momentthe direction of the air current is reversed.

When vthe direction of the wind .is such as tok allow it to blow directly vthrough the intake, then, by releasing the chain 32, the

' `stop wing will be raised by its lspring to limit'this openingmovement of the valve to any desired extent Adepending upon thek temperature and velocity of the incoming air.

We claim :V

1. A valve controlled ventilator intake member comprising an open ended casing adapted to rit between the floor joists of a building and having a bottom wall marginally up-turned and inwardly inclined at the inlet end portion of the casing, a set of brackets secured to said up-turned wall portion, each provided at its respective ends with oppositely extending arms, and a Vpivot rod `mounted in the apertures of the forwardly extending arms; a damper valve pivotally supported by said rod, another rod mounted in the apertures of the rearwardly extending 'arms and provided -with an adjustable stop wing' adapted to limit the opening movement of the damper valve; and lining wall members having oblique faces adapted to form-seating for said damper valve inV its closed position.`

2. InY a ventilator intake structure, the combination with an open ended casing having an upwardly: and rearwardly inclined wall in the lower part of its front end portion, a set of brackets secured to said wall each provided with forwardlyv and rear- 'wardly extending arms, pivot rods mounted respectively in the forwardly and rearwardly extending arms, a balanced damper valve pivotally supported by the 'forward rod and an adjustable stop wing pivotally supported by the rearward rod, and means for adjusting the stop wing to various positions foi` limiting the opening movement of said damper valve.

3. In a ventilator intake structure, the combination with Van openy ended casing, having an upwardly and readwardly inclined wall in the lower part of its frontend portion, al set of Vbrackets secured to said wall respectively in the forwardly and rearwardly extending arms, a balanced damper valve pivotally supported by the forward rod and an adjustable stop wing pivotally supported yby the rearward rod, and means for adjusting the stop wing to various positions for limiting the opening movement of said damper valve, said stop wing being provided with a spring tending to urge Vit in one direction and a manually operable member for urging it in the opposite direction;

leach providedv with forwardly and Arearwardly extending arms, pivot rods mounted` 4.' In a valve controlled ventilator intake member, the combination with an open ended casing, of an obliquely disposed wall member crossing the lower portion of the casing, brackets secured-to lsaid wall memberand provided Ywith forwardly and rearwardly projecting arms, pivotrods supported by thev forwardly and rearwardly `projecting arms respectively, a dampervalve pivotally supported by one of said pivot'rods, anda damper stop adjustably supported by the-` other pivot rod.

5. In a valve controlled ventilator Y.intake member, the combination with an open ended casing having an interior transversely extending bracketed support in its lower portion, transversely extending rods connected with the brackets of saidsupport on i opposite sides thereof, a damper valve piv-v otally supported by one of the rods, and an adjustable stop for the damper valve supported by the other rod, said transverse support, rods, valve and stop being adapted to be assembled as a unit preparatory to assembly of the casing walls.

JOHN B. OLSON.

JOI-IN G.' SHODRON. 

